复合桩基在海堤地基处理中的应用  

Application of Composite Pile Foundation in Sea Embankment Foundation Treatment

作　　者：陈青青 郭敏 CHEN Qingqing;GUO Min(Wenzhou Water Resources and Electric Power Survey and Design Institute Co.,Ltd.,Wenzhou 325009,China;Reservoir,Seawall and Water Resources Management Center of Dongtou District,Wenzhou 325799,China)

机构地区：[1]温州市水利电力勘测设计院有限公司,浙江温州325009 [2]温州市洞头区水库海塘和水资源管理中心,浙江温州325799

出　　处：《浙江水利水电学院学报》2024年第5期42-47,59,共7页Journal of Zhejiang University of Water Resources and Electric Power

摘　　要：沿海开发地块的海堤,堤后用地往往红线距离堤内坡脚近、荷载大,堤前的海域范围又不允许抛石填压,因此单纯对堤身采用常规桩基处理法钻孔灌注桩进行基础处理,很难解决整体稳定问题,施工后还会因海堤堤身与后侧填土沉降严重不均发生结构脱开。为此,以温州灵昆北段标准堤(二期)工程为例,通过实践表明,施工中堤身采用钻孔灌注桩,堤后填土采用水泥搅拌桩进行过渡处理的复合桩基,增强海堤整体稳定性和减少沉降处理不均匀的问题,可供沿海地区类似工程地基处理参考借鉴。For seawalls in coastal development plots,the red line behind the seawall is close to the foot of the inner slope of the seawall with a large load,while the sea area in front of the seawall does not allow for stone throwing and compaction.Therefore,it is difficult to solve the overall stability problem by simply using conventional pile foundation treatment method for bored piles on seawall body.After construction,the structure will be detached due to severe uneven settlement between the seawall body and the backfill soil behind it.Based on the case of Lingkun North Section Standard Embankment(PhaseⅡ)Project in Wenzhou,through calculation and analysis,the composite pile foundation of bored pile for the seawall body combined with cement mixing pile for backfill soil as transition treatment is used in construction.The application shows that the composite pile foundation is effective in enhancing the overall stability of the seawall and dealing with uneven settlement,providing reference for similar foundation treatment in coastal areas.

关 键 词：海堤 复合桩基 钻孔灌注桩 水泥搅拌桩 整体稳定 不均匀沉降 

分 类 号：TU432[建筑科学—岩土工程]